Method of embedding thin printed labels made of gelatin in transparent soap.



, H. KESTNER.

METHOD OF EMBEDDING THIN PRINTED LABELS MADE OF GELATIN IN TRANSPARENT SOAP.

APPLICATION FILED NOV.26, 1913.

1,1 14,006. Patented Oct. 20, 1914.

Fig.3

Fig.2

Witnesses. Inventor.

llermunn Ke sfni @dMdn/ immm j w Y I W AIIys.

771E NORRIS PETERS C0. FHOTO-LITHFL. WASHINGTON, n. c.

minmnnnknsmivnn, or newsma GERMANZZ,

METHOD or EMBEDVDING'ITHIN PRINTED LABELS, ADE or GELATIN ntrimiv's'rllmntrr Application m n November26,,1913. Saar N... 303,359.

I Specification of Letters Patent.

Patented o azo, 1914.

To all whom it may concern:

Be it known that I, HERMANN KESTN R, a'subject of the Emperor of Germany, residing at Miilhausen-in-Alsace, Germany, have invented a new and useful Improved Method of Embedding Thin Printed Labels Made of Gelatin in Transparent Soap, of which the following is a specification. j y

This invention, has reference to van improved method of embedding thin printed labels made of gelatin in cakes or bars of transparent soap. 1 i i i i i The method heretofore? followed in embedding. thin printed gelatin labels intranss parent soap has been to take two pieces of soap, to place the label flat upon one piece,

and then to press the two pieces together with the label between them. Sometimes a suitable adhesive is employed to assist in se-' curing the label in position. It is however impossible to insureby pressing or by the.

use of an adhesive thatthe two parts of the cake or the like will remain securely at-,

tached to each other. vAn adhesive that will meet all the requirements for permanently securing one piece of soap to another is almost inconceivable, and. pressure alone does not insure the adhesion of two pieces of soap which are in a compressible state 2'. 0. partially dried. Thetwo parts of the cake separate or slide upon each other more or less readily when the cake is being used, and air bubbles are often left. between the,

pieces, thereby giving the cake an unsightly appearance and prejudicially affecting the adhesion between the two pieces. fWhen in use, the water finds its way from all sides .into the joint between the pieces, destroying the label and quickly and surely bringing about the separation of the two parts.

It has been proposed to introduce labels into cakes of soap by making a slit in the soap with a knife and then inserting, by

hand and without employing any auxiliary means, a label into theslit and subjecting in the knife.

l at their edges when-thecake'has been in use for some time, and injury to the hands or other parts of the body-is likely to result from contact with the sharp edges of the label. At the least, the projecting edges of the label; make the cake unsightly and it is therefore not marketable as an advertisingfarticle, the cake being thrown'on one .sideas' soon as the edges of the stiff insertion' begin to project from. the soap. The ob ect of the present invention isthe production of transparent pieces of soap w th extremelyv thin and perfectly trans parent printed labels embedded thereinnthe film-like labels being quite invisible in the.

soap. The gelatin films which I employ. are

areknown commercially asjNo. O0. .Myinembodied inthesoap by absorbing moisture therefrom and being, to a certain extent dis- .theveXtremjely thin sheets of gelatin which solved in the soapso that the edges of the label always wearaway regularly with the soap and never. project therefrom and conse .quently can;never cause any injury to the body or cause the cake ofsoap. to become unsightly. Further the soap canbe used up to the last particle.

The cake of soap is formedwith a sheath-' like slit by pushing into the body of the cake from one, side aflat chisel-like knife formed with a cuttingedge at; its front end 1 and also on both sides. An ordinary plan ing machine may be employed for pushing The invention is illustrated in the accompanying drawing, in which Figure 1 is a plan View and Fig. 2 a longitudinal section of a cake of soap a with a knife .7) pushed thereinto to form the sheath-like slit. Fig. 3 is a cross-section of the knife, and Fig. 4: shows the stiff strips of paper which are employed for inserting the film-like label into the slit formed in the soap.

. The width of the knife I) is usually about an inch less than the width of the cake of soap, and the said knife is pushed into the soap until its-front cutting edge is about half an inch from the outer edge of the cake. When the knife has been withdrawn fromthe soap, the label is introduced into the slit, and my invention consists essentially in the particular method and manner of introducing and embedding an extremely thin gelatin label inthe slit. This could-not, be donewithout employing 'auxiliarymeans aonsesc i r f he fl en rigidity -t e 5 eiitremely thin film of gelatin, which sis Very easily bent or broken or caused to. roll up.

, "Forth'e rpo'seotiiitroducing the label into the slit, the saidlabel'isplac'ed between two stifi strips of paper as shown in Fig." 4, in lwhieh-the positi'on of thelabl betw'een the said strip in" indieated=' in-' dotted? lines. Thereupon the two strips-"of paper "with the label lying between them are 15 pushed into-the slit: until the'y' contact -with P the endofthe'slit. -Then one of the twd *stripsis drawn-out et the slit leaving the,

"label in position upon the other strip. Gard *must be taken of coursethat indrawing out? the first strip" fromthe slit'f that 'the-gelatinf film'- is'not displaced. For this purpose the other strip'has formed-in it, wheredndicated fby"the' hatching iii-Fig: 4," alarge 'number of] pin+pricks which "form 'a rough surface onthat side of" thestr ip'-with which the gela-f *tin filmis in-contact. 5 Each pin-prick pro-'1 duees fsmall and 'al'm'o'st invisible round "projection" inf-the paper. Ifthe filmhas a 1 tendency to become displaced when the first strip of paper isrbei'ngwithdrawn;the edge d of -the; label cam-immediately find many -resistanee :points in th'e-lpin-pri'ck projections and be prevented ffrom sliding out- *ward. 'Whenthe first 'str-iphas been withdrawn r the gelatin film "eomes -int'o direct eontaet with the soap and adheres 'thereto so that removal of the second strip of paper is neverva'ccompanied by any displacement of the label. I

After the two'strips of paperhave been; withdrawn, the cake or" soap is passed between-rollers, thr-rsolid edge ofthe cake (6. 6.:

the left band edge of the cake shown-i115 the drawings being '-first i pushed -b'etwe'en Copies of this patent may be obtaindfor *of thecake asheath-shaped slit to receive "thelabel,placing the thin gelatin label between two "strips of stifi paper, inserting the"said-strips with the label between them into the *aforesaid slit, withdrawing first 'one-and-then'the other of the said strips, and then passing'the cake between pressing rollers to close the slit and force the air out of same.

QuA'method of embedding thin printed labels made of gelatin in cakes of transparent soap,- consisting in forming in the body "of the cakea sheath-shaped slit to receive thelabel by means of a chisel-like blade formed with cutting edges at "each side and '-alsoat its front end, placing the thin gelatin label between two stifi' strips of paper which are slightly wider than the label and in one of which a number of pin-pricks are formed 'toprevent displacement of the label thereon, inserting the said strips with the "label between them into the aforesaid slit,

withdrawing first one and then the other of the said strips, and-then passing the cake between pressing rollers to close the slit "and force'the air out of same.

In testimony whereof I have signed my n'ame to this specification in the presence of two subscribing witnesses.

H. KESTNER. Witnesses 'PHILIP'TIOLLAND, VVILHELM BIENZ.

fi ve' cents'each, byaddressing the Commissioner of Patents, walshin'gtdnjn. 0. 

